The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly because
they address a limited audience or are too experimental to be part of
the main source tree.  This does not preclude their usefulness.

User documentation for each module appears in the main SGML documentation.

Most items can be built with `gmake all' and installed with
`gmake install' in the usual fashion, after you have run the `configure'
script in the top-level directory.  Some directories supply new
user-defined functions, operators, or types.  In these cases, after you have
installed the files you need to register the new entities in the database
system by running the commands in the supplied .sql file.  For example,

	$ psql -d dbname -f module.sql

See the PostgreSQL documentation for more information about this
procedure.


Index:
------

adminpack -
	File and log manipulation routines, used by pgAdmin
	by Dave Page <[email protected]>

auto_explain -
	Log EXPLAIN output for long-running queries
	by Takahiro Itagaki <[email protected]>

btree_gin -
	Support for emulating BTREE indexing in GIN
	by Oleg Bartunov <[email protected]> and Teodor Sigaev <[email protected]>

btree_gist -
	Support for emulating BTREE indexing in GiST
	by Oleg Bartunov <[email protected]> and Teodor Sigaev <[email protected]>

chkpass -
	An auto-encrypted password datatype
	by D'Arcy J.M. Cain <[email protected]>

citext -
	A case-insensitive character string datatype
	by David E. Wheeler <[email protected]>

cube -
	Multidimensional-cube datatype (GiST indexing example)
	by Gene Selkov, Jr. <[email protected]>

dblink -
	Allows remote query execution
	by Joe Conway <[email protected]>

dict_int -
	Text search dictionary template for integers
	by Sergey Karpov <[email protected]>

dict_xsyn -
	Text search dictionary template for extended synonym processing
	by Sergey Karpov <[email protected]>

earthdistance -
	Functions for computing distances between two points on Earth
        by Bruno Wolff III <[email protected]> and Hal Snyder <[email protected]>

fuzzystrmatch -
	Levenshtein, metaphone, and soundex fuzzy string matching
	by Joe Conway <[email protected]> and Joel Burton <[email protected]>

hstore -
	Module for storing (key, value) pairs
	by Oleg Bartunov <[email protected]> and Teodor Sigaev <[email protected]>

intagg -
	Integer aggregator
	by mlw <[email protected]>

intarray -
	Index support for arrays of int4, using GiST
	by Teodor Sigaev <[email protected]> and Oleg Bartunov <[email protected]>

isn -
	PostgreSQL type extensions for ISBN, ISSN, ISMN, EAN13 product numbers
	by Germán Méndez Bravo (Kronuz) <[email protected]>

lo -
	Large Object maintenance
	by Peter Mount <[email protected]> 

ltree -
	Tree-like data structures
	by Teodor Sigaev <[email protected]> and Oleg Bartunov <[email protected]>

oid2name - 
	Maps numeric files to table names
	by B Palmer <[email protected]>

pageinspect -
	Allows inspection of database pages
	Heikki Linnakangas <[email protected]>

pg_buffercache -
	Real time queries on the shared buffer cache
	by Mark Kirkwood <[email protected]>

pg_freespacemap -
	Displays the contents of the free space map (FSM)
	by Mark Kirkwood <[email protected]>

pg_standby -
	Sample archive_command for warm standby operation
	by Simon Riggs <[email protected]>

pg_stat_statements -
	Track statement execution times across a whole database cluster
	by Takahiro Itagaki <[email protected]>

pg_trgm -
	Functions for determining the similarity of text based on trigram
	matching.
	by Oleg Bartunov <[email protected]> and Teodor Sigaev <[email protected]>

pgbench -
	TPC-B like benchmarking tool
	by Tatsuo Ishii <[email protected]>

pgcrypto -
	Cryptographic functions
	by Marko Kreen <[email protected]>

pgrowlocks -
	A function to return row locking information
	by Tatsuo Ishii <[email protected]>

pgstattuple -
	Functions to return statistics about "dead" tuples and free
	space within a table
	by Tatsuo Ishii <[email protected]>

seg -
	Confidence-interval datatype (GiST indexing example)
	by Gene Selkov, Jr. <[email protected]>

spi -
	Various trigger functions, examples for using SPI.

sslinfo -
	Functions to get information about SSL certificates
	by Victor Wagner <[email protected]>

start-scripts - 
	Scripts for starting the server at boot time on various platforms.

tablefunc -
	Examples of functions returning tables
	by Joe Conway <[email protected]>

test_parser -
	Sample text search parser
	by Sergey Karpov <[email protected]>

tsearch2 -
	Compatibility package for the pre-8.3 implementation of text search.
	Pavel Stehule <[email protected]>, based on code originally by
	Teodor Sigaev <[email protected]> and Oleg Bartunov <[email protected]>.

uuid-ossp -
	UUID generation functions
	by Peter Eisentraut <[email protected]>

vacuumlo -
	Remove orphaned large objects
	by Peter T Mount <[email protected]>

xml2 -
	Storing XML in PostgreSQL
	by John Gray <[email protected]>